Device and method for expiratory air examination
First Claim
1. An expiratory air examination device comprising:
- an expiratory air sucking portion for receiving expiratory air;
a sample weighing portion connected to the air sucking portion holding as an expiratory air sample a predetermined amount of a portion of the expiratory air fed from the expiratory air sucking portion;
a separation column connected to the sample weighing portion for separating a desired gas component in the expiratory air;
a carrier gas feeding portion connected to the sample weighing portion sending a carrier gas which feeds the expiratory air sample into the separation column;
a detecting portion connected to the separation column, including detector means for ionizing the expiratory air sample by application of ultraviolet radiation, for detecting trace amounts of the desired gas component contained in the expiratory air sample, and for outputting measurement signals corresponding to an amount of ionization of the desired gas component; and
an arithmetic processing portion connected to said detecting portion for processing the measurement signals and for computing concentration of the desired gas component based on a previously memorized working curve.
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Accused Products
Abstract
A portable type clinical examination device using expiratory air of a patient as a sample and measuring with high accuracy and rapidity concentration of trace amounts of aimed gas components contained in the expiratory air. The clinical examination device feeds an expiratory air sample provided by a patient, fed through an expiratory air sucking portion and separated in a column to a detector which detects trace amounts of aimed gas components contained in the expiratory air sample by ionizing the aimed gas components through application of ultraviolet or radiation, so that output signals from the detector are processed and concentration of the aimed gas components is computed by use of a previously memorized working curve to provide a clinical examination data which is output on a recording device or the like.
105 Citations
11 Claims
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1. An expiratory air examination device comprising:
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an expiratory air sucking portion for receiving expiratory air; a sample weighing portion connected to the air sucking portion holding as an expiratory air sample a predetermined amount of a portion of the expiratory air fed from the expiratory air sucking portion; a separation column connected to the sample weighing portion for separating a desired gas component in the expiratory air; a carrier gas feeding portion connected to the sample weighing portion sending a carrier gas which feeds the expiratory air sample into the separation column; a detecting portion connected to the separation column, including detector means for ionizing the expiratory air sample by application of ultraviolet radiation, for detecting trace amounts of the desired gas component contained in the expiratory air sample, and for outputting measurement signals corresponding to an amount of ionization of the desired gas component; and an arithmetic processing portion connected to said detecting portion for processing the measurement signals and for computing concentration of the desired gas component based on a previously memorized working curve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification